<template>
  <div class="component-upload-image">
    <el-upload multiple :action="uploadImgUrl" list-type="picture-card" :on-success="handleUploadSuccess"
      :before-upload="handleBeforeUpload" :limit="limit" :on-error="handleUploadError" :on-exceed="handleExceed"
      ref="imageUpload" :before-remove="handleDelete" :show-file-list="true" :headers="headers" :file-list="fileList"
      :on-preview="handlePictureCardPreview" :class="{ hide: fileList.length >= limit }" :http-request="httpRequest">
      <el-icon class="avatar-uploader-icon" :auto-upload="true">
        <plus />
      </el-icon>
    </el-upload>
    <!-- 上传提示 -->
    <div class="el-upload__tip" v-if="showTip">
      请上传
      <template v-if="fileSize">
        大小不超过 <b style="color: #f56c6c">{{ fileSize }}MB</b>
      </template>
      <template v-if="fileType">
        格式为 <b style="color: #f56c6c">{{ fileType.join("/") }}</b>
      </template>
      的文件
    </div>
    <div class="el-upload__tip" v-if="rule==1" style="color: #f56c6c">
      1.人脸大小适中人头占整个图片1/3-1/2之间为宜。
      2.正对相机.人头在正中间，人头左右上下，均正对摄像头
      3.光线均匀，禁止过暗或过曝，禁止过度化妆及使用美颜相机
      4.脸部不能遮挡并确保图片清晰，正常表情，不能有搞怪动作
      5.禁止在夜间及逆光下取图，人与背景光线要均匀
    </div>

    <el-dialog v-model="dialogVisible" title="预览" width="800px" append-to-body>
      <img :src="dialogImageUrl" style="display: block; max-width: 100%; margin: 0 auto" />
    </el-dialog>
  </div>
</template>

<script setup lang="ts">
  import ImageCompressor from 'image-compressor.js'
  import { listByIds, delOss } from "@/api/system/oss";
  import { ComponentInternalInstance } from "vue";
  import { OssVO } from "@/api/system/oss/types";
  import { propTypes } from '@/utils/propTypes';
  import { globalHeaders } from "@/utils/request";
  import { Camera } from '@element-plus/icons-vue/dist/types';
  const props = defineProps({
    modelValue: [String, Object, Array],
    cameraInfo: [Object, Array],
    // 图片数量限制
    limit: propTypes.number.def(5),
    // 人脸规则提示
    rule: propTypes.number.def(0),
    // 大小限制(MB)
    fileSize: propTypes.number.def(5),
    // 文件类型, 例如['png', 'jpg', 'jpeg']
    fileType: propTypes.array.def(["jpg", "jpeg"]),
    // 是否显示提示
    isShowTip: {
      type: Boolean,
      default: true
    },
    action: {
      required: true
    }
  });

  const { proxy } = getCurrentInstance() as ComponentInternalInstance;
  const emit = defineEmits(['update:modelValue']);
  const number = ref(0);
  const uploadList = ref<any[]>([]);
  const dialogImageUrl = ref("");
  const dialogVisible = ref(false);
  const baseUrl = import.meta.env.VITE_APP_BASE_API;
  const uploadImgUrl = ref(baseUrl + "/resource/oss/upload"); // 上传的图片服务器地址
  const headers = ref(globalHeaders());

  const osidRef = ref();
  const fileList = ref<any[]>([]);
  const showTip = computed(
    () => props.isShowTip && (props.fileType || props.fileSize)
  );

  const imageUploadRef = ref<ElUploadInstance>();

  watch(() => props.modelValue, async val => {
    console.log(val, '第val个监听的内容')
    if (val) {
      // 首先将值转为数组
      let list : OssVO[] = [];
      if (Array.isArray(val)) {
        list = val as OssVO[];
      } else {
        const res = await listByIds(val as string)
        list = res.data
        console.log(res, '第一个监听的内容')
      }
      // 然后将数组转为对象数组
      fileList.value = list.map(item => {
        // 字符串回显处理 如果此处存的是url可直接回显 如果存的是id需要调用接口查出来
        let itemData;
        if (typeof item === "string") {
          itemData = { name: item, url: item };
        } else {
          // 此处name使用ossId 防止删除出现重名
          itemData = { name: item.ossId, url: item.url, ossId: item.ossId };
        }
        return itemData;
      });
    } else {
      fileList.value = [];
      return [];
    }
  }, { deep: true, immediate: true });

  watch(() => props.cameraInfo,(newFile) => {
      if (newFile) {
        // 清空旧文件（如果限制为单文件）
        console.log(props.cameraInfo, '第2个监听的内容')
        if (props.limit === 1) {
          fileList.value = [];
        }
        // 添加新文件到 fileList（格式需符合 Element Upload 要求）
        fileList.value.push({
          name: newFile.name,
          file: newFile,  // 保留原始 File 对象
          status: 'ready', // 确保显示上传状态
        });
        // 手动触发上传（等待 DOM 更新）
        nextTick(() => {
          handleBeforeUpload(); // 调用 el-upload 的提交方法
        });
      }
    },
    { deep: true }
  );

  /** 上传前loading加载 */
  const handleBeforeUpload = async (file : any) => {
    if (props.cameraInfo) {
      file = props.cameraInfo
    }
    let isImg = false;
    if (props.fileType.length) {
      let fileExtension = "";
      if (file.name.lastIndexOf(".") > -1) {
        fileExtension = file.name.slice(file.name.lastIndexOf(".") + 1);
      }
      isImg = props.fileType.some((type : any) => {
        if (file.type.indexOf(type) > -1) return true;
        if (fileExtension && fileExtension.indexOf(type) > -1) return true;
        return false;
      });
    } else {
      isImg = file.type.indexOf("image") > -1;
    }
    if (!isImg) {
      proxy?.$modal.msgError(
        `文件格式不正确, 请上传${props.fileType.join("/")}图片格式文件!`
      );
      return false;
    }

    const isLT10M = file.size / 1024 / 1024 > 0.1;
    if (props.fileSize && isLT10M) {
      console.log(file, '最开始的file文件流');
      var imageCompressor = new ImageCompressor();

      try {
        const result = await imageCompressor.compress(file, {
          quality: 0.5,
          maxHeight: 1000,
          maxWidth: 1000
        });
        file = result;
        console.log(result, '压缩成功的回调');
        // 在这里进行后续的上传处理，例如：
        // return ajax(options) // 压缩成功把压缩成功的数据传递给ajax.js
      } catch (err) {
        console.log(err, '压缩失败的回调');
        // 压缩失败时，你可能需要决定是否还要上传原始文件或处理错误
      }
    }
    proxy?.$modal.loading("正在上传图片，请稍候...");
    number.value++;
    return file
  }
  // const httpRequest = (options) => {
  //   console.log(options, '覆盖默认的上传行为，可以自定义上传的实现，解决压缩问题')
  //   var imageCompressor = new ImageCompressor() // 压缩成功则使用压缩的结果，不成功直接上传
  //   imageCompressor.compress(options.file, {
  //     quality: 0.5,
  //     maxHeight: 1000,
  //     maxWidth: 1000
  //   })
  //   .then((result) => { // 压缩成功的回调
  //     options.file = result
  //     console.log(result,'压缩成功的回调')
  //     //return ajax(options) // 压缩成功把压缩成功的数据传递给ajax.js
  //   })
  //   .catch((err) => { // 压缩失败的回调
  //     console.log(err,'压缩失败的回调')
  //     return options.file // 压缩失败把原文件传递
  //   })

  // }


  // 文件个数超出
  const handleExceed = () => {
    proxy?.$modal.msgError(`上传文件数量不能超过 ${props.limit} 个!`);
  }

  // 上传成功回调
  const handleUploadSuccess = (res : any, file : UploadFile) => {
    if (res.code === 200) {
      uploadList.value.push({ name: res.data.fileName, url: res.data.url, ossId: res.data.ossId });
      uploadedSuccessfully();
    } else {
      number.value--;
      proxy?.$modal.closeLoading();
      proxy?.$modal.msgError(res.msg);
      imageUploadRef.value?.handleRemove(file);
      uploadedSuccessfully();
    }
  }


  // 删除图片
  const handleDelete = (file : UploadFile) : boolean => {
    const findex = fileList.value.map(f => f.name).indexOf(file.name);
    if (findex > -1 && uploadList.value.length === number.value) {
      let ossId = fileList.value[findex].ossId;
      delOss(ossId);
      fileList.value.splice(findex, 1);
      emit("update:modelValue", listToString(fileList.value));
      return false;
    }
    return true;
  }
  const ossIdsArray = ref<any[]>([]);
  const filesArray = ref<any[]>([]);
  // 上传结束处理
  const uploadedSuccessfully = () => {
    if (number.value > 0 && uploadList.value.length === number.value) {
      fileList.value = fileList.value.filter(f => f.url !== undefined).concat(uploadList.value);
      // osidRef.value = fileList.value
      ossIdsArray.value = fileList.value.map(item => item.ossId);
      console.log(ossIdsArray.value, '###########输出提取的 ossId 数组'); // 输出提取的 ossId 数组
      filesArray.value = fileList.value.map(item => item.url);
      console.log(filesArray.value, '###########输出提取的 url 数组'); // 输出提取的 ossId 数组
      uploadList.value = [];
      number.value = 0;
      console.log('上传结束')
      emit("update:modelValue", listToString(fileList.value));
      proxy?.$modal.closeLoading();
    }
  }

  defineExpose({ ossIdsArray, filesArray })
  // 上传失败
  const handleUploadError = () => {
    proxy?.$modal.msgError("上传图片失败");
    proxy?.$modal.closeLoading();
  }

  // 预览
  const handlePictureCardPreview = (file : any) => {
    dialogImageUrl.value = file.url;
    dialogVisible.value = true;
  }

  // 对象转成指定字符串分隔
  const listToString = (list : any[], separator ?: string) => {
    let strs = "";
    separator = separator || ",";
    for (let i in list) {
      if (undefined !== list[i].ossId && list[i].url.indexOf("blob:") !== 0) {
        strs += list[i].ossId + separator;
      }
    }
    return strs != "" ? strs.substring(0, strs.length - 1) : "";
  }
</script>

<style scoped lang="scss">
  // .el-upload--picture-card 控制加号部分
  :deep(.hide .el-upload--picture-card) {
    display: none;
  }
</style>
